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Un-Answered Questions { Software }
What is Combiner in Hadoop?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
Why aggregation cannot be done in Mapper?
Explain map-only job?
What is KeyValueTextInputFormat in Hadoop?
What happen if number of reducer is set to 0 in Hadoop?
What is TextInputFormat in Hadoop?
What is purpose of RecordWriter in Hadoop?
What are the most common OutputFormat in Hadoop?
What is LazyOutputFormat in Hadoop?
What is Identity reducer?
What is Chain Mapper?
What are the core methods of a Reducer?
What are the parameters of mappers and reducers?
What is the difference between TextinputFormat and KeyValueTextInputFormat class?
